I've been loading alot of 223 recently. I was using a plastic dial micrometer (I know, I know) and had to rim maybe 3 out of 10 cases measured on that micro. I picked up a Frankford Arsenal digital model and according to it...I gotta trim them ALL! They're only over by a few thousandths if that but they consitently measure a touch over after FL resize. I have a Lyman hand crank trimmer, hand deburring tool, and chuck my flash hole brush in a cordless drill. My fingers are killing me after 30-40 cases twisting that damn deburring tool!! The crank trimmer isn't so bad and the flash hole cleaning is a snap with the drill. Anybody using a case prep station that will help with the chamfering deburring part???